This is your first build and I am not wanting to have a go at you, but the one thing that struck me is that you chose the Inwin Commander II PSU.
With regard to any PSU it is at its most efficient at 50% (+/- 7%) load. With the hardware you have in your system you are running the PSU at the low end of its rated output and are thus wasting money on electricity.
It may be Bronze Certified, but with the hardware hardly warrants a 1200 Watt PSU. You would have been better off if you had bought a lower rated PSU and gone for a Platinum model which would have probably come out at about the same price. You can find a good deal on something like a Corsair AX860 (not the "i" version because I don't trust it) and you would have had enough power to go Crossfire with your GPU.
Your best bet is to look on a PSU calculator and then buy the the one you need according to the actual usage of your system.